/* Root Variables - Light Mode as Default */
:root {
    --bg-dark: #ffffff;
    --primary: #0088cc;
    --secondary: #007799;
    --text-main: #000000;
    --text-muted: #334155;
    --glass-bg: rgba(0, 0, 0, 0.05);
    --glass-border: rgba(0, 0, 0, 0.1);
    --card-bg: #fdfdfd;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --font-primary: 'Inter', sans-serif;
    --font-accent: 'Poppins', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --bg-dark: #000000;
    --primary: #00d4ff;
    --secondary: #00fff2;
    --text-main: #ffffff;
    --text-muted: #b0b0b0;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --card-bg: rgba(255, 255, 255, 0.03);
    --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-padding {
    padding: 100px 0;
}

/* Loading Page */
#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #e0f2f1;
    z-index: 10000;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    font-family: var(--font-primary);
}

.loader-bg-text {
    position: absolute;
    font-size: 12vw;
    font-weight: 900;
    color: rgba(0, 0, 0, 0.5);
    white-space: nowrap;
    pointer-events: none;
    text-transform: uppercase;
    animation: scrollText 20s linear infinite;
}

@keyframes scrollText {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.loader-top {
    position: absolute;
    top: 2rem;
    left: 2rem;
    right: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.loader-y {
    font-size: 1.5rem;
    font-weight: 800;
    color: #000;
}

.loader-bars {
    display: flex;
    gap: 4px;
}

.loader-bars span {
    width: 2px;
    height: 15px;
    background: #000;
    animation: barGrow 1s ease-in-out infinite;
}

.loader-bars span:nth-child(2) { animation-delay: 0.2s; }
.loader-bars span:nth-child(3) { animation-delay: 0.4s; }
.loader-bars span:nth-child(4) { animation-delay: 0.6s; }

@keyframes barGrow {
    0%, 100% { height: 10px; }
    50% { height: 20px; }
}

.loader-pill {
    background: #000;
    padding: 1.2rem 3.5rem;
    border-radius: 100px;
    display: flex;
    gap: 3rem;
    align-items: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 2;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.loader-text {
    color: #fff;
    font-weight: 600;
    letter-spacing: 2px;
    font-size: 0.8rem;
}

.loader-percentage {
    color: #fff;
    font-weight: 400;
    font-size: 0.8rem;
    min-width: 45px;
    text-align: right;
}

body.loading {
    overflow: hidden;
}

/* Custom cursor removed - was causing issues on mobile devices */

/* Background Blurs */
.bg-blur {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    filter: blur(100px);
}

.circle {
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
}

.circle-1 {
    background: var(--primary);
    top: -100px;
    left: -100px;
    opacity: 0.2;
}

.circle-2 {
    background: var(--secondary);
    bottom: -100px;
    right: -100px;
    opacity: 0.15;
}

.circle-3 {
    background: var(--primary);
    top: 50%;
    left: 50%;
    opacity: 0.1;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background: rgba(10, 10, 12, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 2px;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.theme-toggle {
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--text-main);
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    color: var(--primary);
    transform: rotate(15deg);
}

/* Light Mode (default) visibility fixes */
.section-title h2,
.hero h1,
.service-card h3,
.tech-item span,
.work-info h3,
.timeline-content h3,
.contact-item p,
.subtitle {
    color: var(--text-main);
}

/* Dark mode overrides */
[data-theme="dark"] nav {
    background: rgba(10, 10, 12, 0.8);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    transition: color 0.3s;
    font-size: 0.9rem;
}

.nav-links a:hover {
    color: var(--secondary);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.hero h1 {
    font-size: 8rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(to right, var(--text-main), var(--text-muted));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -2px;
}

.hero h2 {
    font-size: 2rem;
    color: var(--secondary);
    margin-bottom: 2rem;
    font-weight: 400;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

/* Buttons */
.btn {
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    color: #fff !important; /* Always white on gradient */
}

.btn-secondary {
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    background: var(--glass-bg);
}

.btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(155, 77, 255, 0.3);
}

/* Section Common Styles */
.section-title {
    margin-bottom: 3rem;
    text-align: left;
}

.subtitle {
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 0.8rem;
    font-weight: 600;
    display: block;
    margin-bottom: 0.5rem;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-main);
}

/* Glass Cards */
.glass {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: var(--shadow);
    transition: all 0.4s ease;
}

.glass:hover {
    border-color: var(--primary);
    transform: translateY(-10px);
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card i {
    font-size: 2.5rem;
    color: var(--secondary);
    margin-bottom: 1.5rem;
}

.service-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

/* Tech Stack */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.tech-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
}

.tech-item i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
    color: var(--secondary);
}

.tech-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--secondary);
}

/* Work Card */
.work-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.work-img {
    height: 200px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 5rem;
    color: var(--primary);
    background: var(--glass-bg);
    border-radius: 15px;
    margin-bottom: 1.5rem;
}

.view-project {
    display: inline-block;
    margin-top: 1.5rem;
    color: var(--secondary);
    text-decoration: none;
    font-weight: 600;
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    width: 2px;
    height: 100%;
    background: var(--glass-border);
}

.timeline-item {
    margin-bottom: 3rem;
    position: relative;
    padding-left: 60px;
}

.timeline-dot {
    position: absolute;
    left: 14px;
    top: 0;
    width: 14px;
    height: 14px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--primary);
}

.date {
    color: var(--secondary);
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: block;
}

/* Contact */
.contact-grid {
    max-width: 600px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary);
    background: rgba(155, 77, 255, 0.1);
    width: 50px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
}

.social-links {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

/* Brand Colors Fix */
.social-links a {
    color: var(--text-main);
    transition: var(--transition);
}

.social-links a svg {
    display: block;
    transition: transform 0.3s ease;
}

.social-links a:hover svg {
    transform: scale(1.1);
}

.social-links a:hover {
    opacity: 0.8;
}

/* Remove old brand colors since we use inline SVG colors */
.social-links a.github,
.social-links a.linkedin,
.social-links a.leetcode,
.social-links a.instagram { 
    color: unset; 
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem 0;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
}

/* =====================
   RESPONSIVE STYLES
   ===================== */

/* Hamburger menu button */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0.3rem;
    background: none;
    border: none;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--text-main);
    border-radius: 2px;
    transition: all 0.3s ease;
    display: block;
}

.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Tablet (max 1024px) */
@media (max-width: 1024px) {
    .hero h1 { font-size: 6rem; }
    .work-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
    .tech-grid { grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); }
}

/* Mobile (max 768px) */
@media (max-width: 768px) {
    .hero h1 { font-size: 3.5rem; letter-spacing: -1px; }
    .hero h2 { font-size: 1.3rem; }
    .hero-cta { flex-direction: column; align-items: center; gap: 1rem; }
    .hero-cta .btn { width: 100%; max-width: 280px; text-align: center; }

    .container { padding: 0 1.2rem; }
    .section-padding { padding: 70px 0; }
    .section-title h2 { font-size: 2rem; }

    /* Nav mobile */
    .hamburger { display: flex; }
    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        right: 0;
        width: 75vw;
        max-width: 300px;
        height: 100vh;
        background: var(--bg-dark);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2.5rem;
        z-index: 1000;
        border-left: 1px solid var(--glass-border);
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
        transition: none;
    }
    .nav-links.open { display: flex; }
    .nav-links a { font-size: 1.1rem; }

    .services-grid { grid-template-columns: 1fr; }
    .tech-grid { grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 1rem; }
    .work-grid { grid-template-columns: 1fr; }
    .timeline { padding: 0; }
    .contact-grid { max-width: 100%; }

    .glass { padding: 1.8rem; }
    nav { padding: 1rem 5%; }
}

/* Small mobile (max 480px) */
@media (max-width: 480px) {
    .hero h1 { font-size: 2.8rem; }
    .hero h2 { font-size: 1.1rem; }
    .section-title h2 { font-size: 1.7rem; }
    .tech-grid { grid-template-columns: repeat(3, 1fr); }
    .tech-item { padding: 1.2rem 0.8rem; }
    .tech-item i { font-size: 2rem; }
    .glass { padding: 1.4rem; }
    .loader-pill { padding: 1rem 2.5rem; gap: 2rem; }
    .loader-bg-text { font-size: 16vw; }
}

/* About Section Enhancements */
.about-content.glass {
    padding: 3rem;
    border-radius: 20px;
    background: var(--card-bg);
}

.highlight-text {
    font-size: 1.15rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    color: var(--text-main);
    text-align: center;
}

.highlight-text strong {
    color: var(--primary);
    font-weight: 800;
}

.highlight {
    color: var(--secondary);
    font-weight: 600;
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0;
    width: 100%;
    height: 8px;
    background: var(--primary);
    opacity: 0.2;
    z-index: -1;
    border-radius: 4px;
    transform: rotate(-1deg);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.about-card {
    background: rgba(var(--primary), 0.03);
    border: 1px solid var(--glass-border);
    padding: 2rem;
    border-radius: 15px;
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-5px);
    border-color: var(--secondary);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.about-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 5px 15px rgba(0, 136, 204, 0.3);
}

.about-card h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.about-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* About Section Flex Layout */
.about-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 3rem;
    align-items: center;
}

.about-image-col {
    flex: 1 1 350px;
    display: flex;
    justify-content: center;
}

.about-wrapper .about-content {
    flex: 2 1 500px;
}

.about-image-container {
    position: relative;
    border-radius: 20px;
    padding: 10px;
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    max-width: 400px;
    width: 100%;
}

.about-image-container img {
    width: 100%;
    border-radius: 12px;
    display: block;
    position: relative;
    z-index: 2;
    aspect-ratio: 1/1;
    object-fit: cover;
}

.image-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(circle, var(--primary) 0%, transparent 60%);
    opacity: 0.15;
    z-index: 1;
    pointer-events: none;
    filter: blur(40px);
}